31132200000 has 672 divisors, whose sum is σ = 115721343360. Its totient is φ = 7321600000.

The previous prime is 31132199983. The next prime is 31132200059. The reversal of 31132200000 is 223113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 349799956 + ... + 349800044.

It is an arithmetic number, because the mean of its divisors is an integer number (172204380).

Almost surely, 2^31132200000 is an apocalyptic number.

31132200000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31132200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57860671680).

31132200000 is an abundant number, since it is smaller than the sum of its proper divisors (84589143360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31132200000 is an equidigital number, since it uses as much as digits as its factorization.

31132200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31132200000 its reverse (223113), we get a palindrome (31132423113).

It can be divided in two parts, 31132 and 200000, that added together give a palindrome (231132).

The spelling of 31132200000 in words is "thirty-one billion, one hundred thirty-two million, two hundred thousand".